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March 1, 1932. N L. sNow ET Al.

BOILER CLEANER 3 Sheets-Sheet original Filed 'Feb E11/venters Strom/m3 March 1, 1932. N. sNow ET AL BQILER CLEANER originalFiied Feb. 18, 1924 5 Sheets-Sheet March 1,41932. N, L SNOW ET AL 1,847,416

' BOILER CLEANER Original Filed FebA. 18, 1924 3 Sheets-Sheet 5 Patented Mar. 1, 1932 UNITE STATES PATENT oFFicE NORMAN L. SNOW, OF NEW CANAAN, CONNECTICUT, AND CURTIS L. HOWSE, F DETROIT,

MICHIGAN', ASSIGNORS TO DLMOND POWER- SPECIALTY CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN 'c BOILER CLEANER Application led February 1S, 1924, Serial The invention relates to boiler cleaners and refers more particularly to that type having a blower element through which cleaning fluid such as steam or the like is discharged to clean the boiler tubes or other parts of theboiler. The invention has among its objects the provision of an improved boiler cleaner ot the type mentioned. y

With this as well as other objects in view, the invention further resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.4

Tn the drawings:

Figure 1 is a longitudinal cross section through a boiler cleaner'embodying our invention;

Figure 2 is an end view thereof v Figure 3 is a cross section on the line 3-3 l of Figure 2;

Figures 4 and 5 are views partly in longitudinal section and partly in side elevation, showing modiiied constructions.

1 is the blower element adapted to discharge the cleaning iiuid such as Steam or the like upon the boiler tubes orotherparts of the boiler. 2 is the boilerwall box mounted in an opening in the boiler setting 2a through which the blower element extends and in which it is free to move. 8 is the head in which the cylindrical hollowbody 4 is rotatably mounted. The blower element is ro tated by suitable means such asthe projections 5 upon the body 4 which loosely engage in the channels 6 in the adjacent end ot the blower element. This body 4 has the valve seat 7 at its end adjacent to the end of the blower element and carries the axially mova- .ble valve 8 adapted to engage the seat 7 and control the passage of the cleaning 'uid through the blower element. 9 are openings in the body placing its interior outwardly beyond the valve seat in communication with the inlet passageway 10 in the head 3 through lwhich the cleaning Huid enters the body.

11 is the valve stem extending through the partition 12 within the body, which latter guides the valve stem. For conducting the steam or the like which leaks between the body 4 and the head from'the openings 9 or No. 693,609. Renewed september 17`y 1931.

which leaks between the valve stem 11 and the guide partition 12, there is the passageway 13 in the guide partition which communi- Cates with the annular groove 14 in the head 3. This annular groove communicates with the curved passageway 15 in the head which leads to the annular space between the blower element 1 and the sleeve 16, the inner end of this space communicating with the interior of the boiler. This annular space 16a also communicates with the space between the head and body inwardly beyond the opening 9 in the body 4. Thus it is seen that with this construction, any cleaning fluid which leaks` between the body 4 and the head 3 as well as between the valve stem 11 and the body 4 is conducted to the interior of the boiler.

For the purpose of opening and closing the valve we have, in the present instance, made luse of a part of the mechanism for rotating the blower element. In detail, 17 is the sheave wheel of this mechanism around which may extend a flexible operating member such as a chain. 18 is a pinion rotated by the shea-ve wheel and meshing with the gear 19, which latter is fixed upon the body 4 as by set screws 19a. This body 4 being operatively connected to the blower element 1 by the projections 5 loosely engaging in the slots 6, will rotate the latter andat the same time permit of mis-alignment between the head and the blower element.v To permit swinging ot the blower element its outer end is enlarged and provided with a spherical bearing tace 2O for engaging a. spherical bearing face 21 in the socket plate 22. Also, to permit movement of the blower element transverseto the axis ot the body 4, the socket plate 22 is slidable transversely of the axis of the body.

The mechanism for moving the valve 8 to open and closedpositions makes use of the gear 19. In detail, 23 is a plate at the outer end of the head 3 and secured to the valve stem 11 by suitable means such as the nut 24 at its outer side and the transverse pin 25 at its inner side. The plate is preferably provided on its inner side with a plurality of cams 26 concentric with its axis ot rotation wsjA and the gear 19 is provi leo with a. corresponding number of transverse pins 27 engageable with the cams 26, the latter being secured to plate 23 by studs 40. The plate is also provided with the stops 28 and 29 tending periph'erally therebeyond and occupying di'tierent planes and engageable with the stationaryY stop 30 upon the bracket 31 which is secured to the head 3.

Vlith the part-s in the position indicated in Figures 1 and 2 and upon rotation of the sheave wheel 17 the blower' element 1 is rotated by means of the pinion 18, gear 19, and body 4. Since `the plate 23 cannot revolve owing tothe "stop 28 being in engagement with the stationary stop 30, each transverse pin 27 upon the gear 19 rides ov r the inclined surface of vits respective cam 26, thereby forcing the plate outwardly. When the pins have Ymoved'over the inclined. surfaces 32 and come into engagement with the plain surfaces 33 orn the cams, the. plate 23 has been moved outwardly a sul'licient distance to move the valve 8 to open position and to disengage the stop 2Sfrom the stationary stop SO so that upon continued rotation of the gear 19 the plate'23 will be revolved. Rotation of the plate 23 continues until the stop 29 comes into contact with the stationary stop 30 after which the transverse pins 27 ride over the next inclined surfaces 34 of their res'pective'cams and then over the oppositely inclined surfaces 35. The inclined surfaces 34 assists in preventing pins 2? accidentally riding ofil the cams 26. The plate 23 is thereupon allowed to resume its original position, at which time the stop 29 becomes disengaged from the stationary stop 30 the valve S isvin closed position. The valve is moved t closed position by suitable means such as the coilspring l36 withinthe outer end oi the body 4 and abutting a projecting ring 37@ formed on the inner end of the sleeve 37. This projecting ring 37a lits snugly againstI the body 4.A Spring 36, at its opposite end abuts the projecting ring 4a which is an integral part of plate 4b. This plate, in turn, is fixed to body 4 and the hub of gear 19, in any suitable manner. rlhe outer end of sleeve 37 is engaged by the collar o8 sleeved upon the valve stem 11 and in engagement with the transverse pin 25.

For the purpose of varying the time of opening and closing the valve, the stops 28 and 29 are adju'stably secured to the plate 23 by suitable means such as the bolts 39 and nuts 40 which are adapted to alternatively engage in peripherally-spaced openings o9 near the edge of the plate 23.

In the modified construction or" boiler cleaner shown in Figure 4, labyrinth grooves 41 are provided in the periphery of the body 4 on opposite sides of the openings 9 and also outwardly beyond the passageway 13 in the body partition 12, these groovesl assisting in restricting` the flow of the -cleaning fluid between the body and head. Also, labyrinth grooves 42 are provided in the partition 12 and surrounding the valve stem 11, these grooves being preferably on opposite sides of the partition passagewayl.

As shown in Figure 5, the passage of the cleaning fluid between the body 4 and head 3 is restricted by providing suitable packing `43 in the grooves 44. Also, suitable packing is provided in the body 4 and surrounding the valve stem l1, this packing, as shown, being located in the groove 45 beyond the passageway 13 of the body partition. It is obvious that this packing, if used, may be formed of softmaterial such as fibrous or the like material, or it may be formed of hard material such as metal and inthe form of piston rings.

It will be noted that in each form of construction there is provided means for conducting to the interior of the boiler setting cleaning fluid which might escape either between the body 4 and the head 3 or between the valve stem 11 and the body partition 12. It will be apparent that while the body 4 is shown as being flexibly connected to the blower element 1, this body is a swivel tube and constitutes in substance a portion of the blower element. Thus, in the claims, wherever the expression contact surfaces between said element and said. head is used there is meant the contact surfaces between a swivel tube such as the body 4, the blower head, whether this swivel tube be flexibly connected to the blower element as disclosed or whether this swivel tube be formed as an integral part of the blower element. f

l/Vhat we claim as our invention is:

1. In a boiler cleaner, the combination with a head provided with a cleaning fluid supply pipe, of a rotary blower element and a body rotatably mounted in said head, an axially movable valve within said body provided with a stem, a guide for said stem, a passageway in said head communicating with the interior of the boiler, and a passageway in said guide communica-ting with said first-mentioned passageway, whereby cleaning lluid escaping past the contact surfaces between said stem and said, guide may be conducted to said tiret-mentioned passageway and hence to the interior of the boiler.

2. ln a boiler cleaner, the combination with a. rotary blower element, and a valve 4for controlling the passage of cleaning fluid through said blower element, said valve being rotatable therewith, of means for rotating saidV through said blower element, said valve befr n,

ing rotatable therewith, of means for rotating said blower element including a member rotatable therewith, anda cam member co operating with said last-mentioned member for axially moving said valve to actuate the same.

ll. ln a boiler cleaner, the' combination with a head, ofl a rotary blo-wer element mounted thereon, an axially movable valve for controlling the admission of cleaning fluid to said blower element, said valve having a stem in substantial axial alignment with said blower element, means for rotating said blower clement includingl a gear, transverse pin upon said gear, a plate for moving said valve stem in one direction, and a cam upon said plate engageable with said transverse pin upon rotation of said gear.

ln a boiler cleaner, the combination with a head, of a rotary blower element mounted in said head, an axially movable valve adapted to control the passage of cleaning fluid through said blower element, a plate operatively connected to said valve, a cam upon said plate, means for rotating said blower element including a gear, a transverse pin upon said gear adapted to engage said cam and thereby axially move said valve, and cooperating stops upon said plate and head oontro ling the engagement of said transverse pin and cam.

6. ln a boiler cleaner, the combination with a rotary blower element and a valve for controlling the passage of cleaning fluid through said blower element, said valve being rotatable therewith, of means for rotating said blower` element including a gear rotatable therewith, and means dependent upon rotation of said gear for moving said valve to open and close the same.

7. ln a boiler cleaner, the combination with a rotary blower element, and a valve for controlling the passage of cleaning fluid through said blower element, said valve being rotatable therewith, of means for rotating said blower element including a member rotatable therewith and a cam member cooperating with said last mentioned member for moving said valve to actuate the same'.

8. ln a boiler cleaner, the combination with a head located eXteriorly of the boiler setting and provided with a cleaning fluid supply pipe, of a blower element adapted to discha cleaning fluid, said blower element being iournalled in said head and adapted to receive cleaning fluid therefrom, and means for conducting to the interior of the boiler setting, cleaning fluid escaping outwardly away from the boiler setting and past the contact surfaces between said element and said head.

9. ln a boiler cleaner, the combination with a head located exteriorly of the boiler setting and provided with a cleaning fluid supplyV pipe', of a blower element adapted to dis means for conducting to the interior of the boiler setting, cleaning fluid escaping past the contact surfaces between said valve operating member and said head.

l0. ln a boiler cleaner, the combination with a head located eXteriorly of the boiler setting and provided with a cleaning fluid supply pipe, of a blower element journaled in said head and adapted to receive cleaning fluid therefrom, a valve mounted in said head and movable to control the supply of cleaning fluid to said element, a stem for said valve, and a passageway for conducting to the interior of the boiler setting cleaning fluid escaping around the said valve stem.

ll. In a Vboiler cleaner, the combination with a rotary blower element and a valve for controlling the flow of cleaning fluid to said element, of means for rotating said blower element including a member rotatable therewith, a plate-like member movable with said' valve, a cam carried by the platelile member and means carried by said rotatable member engageable .with said cam for moving said plate-like member to actuate said valve.

l2. In a boiler cleaner, the combination with a rotary blower element, of ahead in which said element is journaled, said head being located -eXteriorly of the boiler setting and being adapted to a supply cleaning fluid to said blower element, a valve in said head to control the supply of cleaning fluid to said blower element, and a passageway in said head adapted to conduct to a point inside the boiler setting any cleaningfluid leakage escaping outwardly away from said boiler setk ting and past the moving parts of said head.

13. In a boiler cleaner, the combination with a rotary blower element, of a head in which said element is journaled, said head being located eXteriorly of the boiler setting and being adapted to supply cleaning fluid to said blower element, a valve in said head to control the supply of cleaning fluid to said blower element and a passageway in said head forming a by-pass around the said valve,

y said passageway being'adapted to conduct to escaping past the Contact surfaces between said element and said head. Y

15. ln a boil cleaner, the combination 'with a bead loc. exteriorly of the boiler set-ting, a wall box mount d in the boiler setting, and blower eieinent projecting through said w'all bei: and iournaled insaid head for rece-itil cleaning fluid therefrom, of a passageway formed in said head for conducting to the said wall box cleaning fluid escaping past the moving parts of said head.

16. ln a boiler clean-r, the combination with a head located exteriorly el the boiler setting`v antL a blower elenientprojecting through said boiler setting and journaled in said head for receiving cleaning fluid therefrein7 of a passageway 'for ned in said head and extending trein one side te the other side thereof for conducting to the interior of the boiler setting cleaning `iuid escaping past the moving parts of said head.

17. In a boiler cleaner, the combination with a boiler setting, a rotary blower element projecting thror h sait"L setting., head in which said blower elem '1 is jgournaled, said head located exteriorly of the boiler setting and being adapted to supply cleaning fluid to said blower element, and a passageway adjacent the blower element passing through said setting, of ineens in said head for conducting to the said passageway cleaning fluid escaping past the moving parts of said hea-d.

18. ln a boiler cleaner, the combination with a boiler setting, a rotary blower element projecting through setting, a head in which said bloifer e "nent is journaled, said-head being located exteriorly of the boiler setting and being adapted to supplyv cleaning fluid to said blower element, a valve in said head for controlling the supply of cleaning fluid to saidl blower eleinent, and a passageway passing through said boiler setting adjacent the said blower element, of a passageway in said hea-cl ac-ent said valve for conducting to the irst inentionec passageway cleaning fluid escaping past the moving part-s of said head.

19. ln a boiler cleaner, the combination with boiler setting, a wall box projecting through the setting, a blower eleinent lpro-- jecting through the wall box and spaced troni the inner periphery thereof to provide an annular passaeeway extending through said setting', and a head in which said element is journaletl, said head being located exteriorly of the boiler setting and being adapted to supply cleaning luid to said blower elem-ent, of ineans providing a passageway for conducting to the said annular passageway7 cleaning iuid escaping past the niovinof parts of said head.

20. ln a boiler cleaner, the combination with a head located eXt-eriorly of the boiler setting", and blower element projecting ture.

NORMAN L. SNOV. CURTIS L. HOVSE, 

